| 摘要 |
PCT No. PCT/FR94/00728 Sec. 371 Date Jul. 18, 1996 Sec. 102(e) Date Jul. 18, 1996 PCT Filed Jun. 16, 1994 PCT Pub. No. WO95/00197 PCT Pub. Date Jan. 5, 1995An instrument including a guide needle (1), at least two nesting concentric tubes (2-6) placed over the guide needle, and an outer working tube (7) concentric with said tubes. The tip of the outer tube (7) is provided with a device (11) for spacing apart the bodies of vertebrae adjacent to the disk and keeping them apart during surgery, while its proximal end is provided with a hand grip (8). Anterior percutaneous nuclear incision performed with said instrument enables puncture of the disk, and particularly excision of the nucleus, to be performed easily, more quickly and more effectively than with the conventional posterolateral approach, while avoiding any damage to the anatomical environment of the patient. |
